Add Bookworm upgrade notes for VPS

1 files changed, 54 insertions, 0 deletions

diff --git a/guides/setups/operating-systems/debian.org b/guides/setups/operating-systems/debian.org
index dcc7d02..4a273b0 100644
--- a/guides/setups/operating-systems/debian.org
+++ b/guides/setups/operating-systems/debian.org
@@ -405,6 +405,60 @@ does have an interface named =eth0=, and that name also shows up in
 ****** Known severe bugs ([[https://www.debian.org/releases/bookworm/amd64/release-notes/ch-information.en.html#rc-bugs][ref]])
 - [[https://bugs.debian.org/1036041][bug#1036041]]: =upgrade-reports: Dell XPS 9550 fails to boot after
   bullseye to bookworm upgrade - grub/bios interaction bug?=
+**** VPS
+***** =/etc/cloud/cloud.cfg=
+My local version has these two lines:
+#+begin_src
+mount_default_fields: [~, ~, 'auto', 'defaults,nofail', '0', '2']
+manage_etc_hosts: true
+#+end_src
+No idea if this is OVH-specific.  No idea if I want them.  Let's trust
+"the package maintainer" 😐
+***** =/etc/ssh/sshd_config=
+OK, note to self: *never* choose "do a 3-way merge".  Thought that
+would be something along the lines of Emacs's Ediff; instead…
+#+begin_quote
+Merging changes into the new version
+#+end_quote
+/Mind giving a couple more details on that "merge" mate?/
+
+OK,
+
+- =/usr/share/openssh/sshd_config= has the new stock config,
+- =/etc/ssh/sshd_config.ucf-old= has the /previous/ *local* config
+- ~diff -u {/usr/shared/openssh,/etc/ssh}/sshd_config~ suggests that
+  the ✨magic merge✨ did TRT; the only differences are
+  - stuff I remember changing in (=PermitRootLogin=,
+    =PasswordAtuhentication=)
+  - a spurious whitespace-only hunk on =Subsystem sftp= (the
+    =/usr/share= version uses tabs; the =/etc= version ended up with a
+    single space)
+***** Removing obsolete stuff
+Erm, why does ~apt purge '~c'~ says
+#+begin_quote
+The following packages were automatically installed and are no longer required:
+[…] nginx-core nginx-full […]
+#+end_quote
+
+😨
+
+#+begin_src
+$ dpkg -S $(sudo which nginx)
+nginx: /usr/sbin/nginx
+$ apt depends nginx
+[…]
+  Replaces: nginx-core (<< 1.22.1-6~)
+  Replaces: nginx-extras (<< 1.22.1-6~)
+  Replaces: nginx-light (<< 1.22.1-6~)
+#+end_src
+
+Ah.
+****** Rsyslog
+Refuses to disappear.  The doc says ~apt-mark auto~ followed by ~apt
+autoremove~ should remove it, but that does not seem to be happening
+(~autoremove~ does not find anything to remove).  The =rsyslog=
+service is still up & running, and watches =syslog.socket= to
+re-activate itself 😕
 ** impromptu IBus
 Installing [[https://zoom.us/][Zoom]]'s Debian package somehow enabled IBus[fn:: AFAICT
 because ibus recommends im-config, and the latter autostarts the